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[Official] MSI GTX 680 Lightning Owners Club - Page 392

post #3911 of 7730
Quote:
Originally Posted by Deano12345 View Post

And here was me thinking I'd be fine on my HX850 frown.gif Although I probably wont need to overvolt mine, so hopefully I'll be alright.

Ya you will be fine.as long as you don't add to much to them..
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post #3912 of 7730
So Guys...
I am testing the new driver 310.54.... and the weather outside is coooool biggrin.gif

New score in 3DMark 11:
1300vzuwv.jpg
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post #3913 of 7730
^^ Nice score smile.gif
    
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post #3914 of 7730
+330 gpu congratulations:)


and now one simple question:

I noticed that no matter if I set power limit on 200 % or 300 %, clocks are stable at +180 for gpu and +700 for mem !!! and my question is: what is the purpose of 300 % power limit if I get the same clocks as at power limit 200 % ???
post #3915 of 7730
Quote:
Originally Posted by maestrobg View Post

+330 gpu congratulations:)
and now one simple question:
I noticed that no matter if I set power limit on 200 % or 300 %, clocks are stable at +180 for gpu and +700 for mem !!! and my question is: what is the purpose of 300 % power limit if I get the same clocks as at power limit 200 % ???

http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide

This guy does a fantastic job of explaining how the power target works. (I would end up confusing you lol).

Fantastic guide also smile.gif
    
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post #3916 of 7730
Quote:
Originally Posted by maestrobg View Post

+330 gpu congratulations:)
and now one simple question:
I noticed that no matter if I set power limit on 200 % or 300 %, clocks are stable at +180 for gpu and +700 for mem !!! and my question is: what is the purpose of 300 % power limit if I get the same clocks as at power limit 200 % ???

Big numbers are sexy
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post #3917 of 7730
ok explain that to me wit couple of words?
post #3918 of 7730
Quote:
. Now run a complete run of the Heaven benchmark. Now check GPU-Z for the maximum recorded core clock. This number is your Max Boost.

Power Percent and Power Target:
The Power Percent is the percent of TDP (Thermal design power) the card is running at. So if the card's TDP is rated at 170W and the card is running at a Power Percent of 117%, that means it's drawing 17% more watts of power than TDP, or 199W. The Power Target on the other hand, is a user defined number that tells the GPU how much over TDP it can go. For example, if you were to set the Power Target to 109% then the card would be able to run about 9% over TDP. However, there does seem to be some additional headroom involved, so realistically, a 109% Power Target would allow the card to go up to around 115% Power Percent. Like i mentioned above in the Kepler Boost section, Kepler Boost is also throttled down based on Power Percent. If the GPU is set at 100% Power Target, then the card will only be allowed to draw enough power to boost up to ~100% of TDP, anymore than that and the card will start to throttle the Kepler Boost value by 13Mhz increments in-order to stay below this number. If you were to then set the Power Target to a higher value, then the GPU could boost a little higher until it either reaches its maximum Kepler Boost or it reaches this new Power Target.
    
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post #3919 of 7730
If i run Heaven for 2-3 hours, its like my FPS drops 100%.. No matter what driver i use.

I get ~1450 score at 1080p all maxed. After 2-3 hours of "burn in" at those settings, i get 750. My 3D clocks are exactly the same..

Anyone else get this problem? After a restart, performance is back to normal.

What is this? sleepysmiley03.gif
post #3920 of 7730
Quote:
Originally Posted by DJRamses View Post

So Guys...
I am testing the new driver 310.54.... and the weather outside is coooool biggrin.gif

New score in 3DMark 11:
1300vzuwv.jpg

Good Lord. 1529mhz @ 37C....I gotta set up a loop with the rad outside like that (I live in Buffalo, so I'll have half the year to bench biggrin.gif).

Makes 'ya wonder... Nvidia's whole Greenlight program... seems like these chips may have been locked down to an unusually low voltage (1.175v). They don't seem to be as sensitive to overvolting as some people think. I mean, if they were so sensitive, how come no Lightnings have fried yet? Even with semi-extreme cooling such as yours (almost 1.5v at only 37C), you'd think the chip would start degrading super-quick with that much voltage regardless of temps if there was any truth to the assumption that these chips have already been pushed to their limits. Aside from you, myself and most (if not all) people here have gone up to 1.36v and beyond multiple times since June, and we still have yet to see anyone come out and say they've lost a notable amount of mhz on their overclock (not including instability caused from various driver updates). Lightnings have only been out about 5 months, but still, that seems long enough for the possibility they'd back up the belief that these chips are more sensitive to increased voltage, or at least more-so than any other series. So, I don't know, just thinking out loud I suppose. But I think we'd see some fried/degrading ones by now if it was true these chips were less capable. I know it's the 'Lightning' version, but aside from the custom PCB, it's still the same chip. I would think of all the different variations of 680s out there, Lightnings would have a substantial fail-rate, higher than locked-down 680s, but nope confused.gif
Quote:
Originally Posted by Lass3 View Post

If i run Heaven for 2-3 hours, its like my FPS drops 100%.. No matter what driver i use.

I get ~1450 score at 1080p all maxed. After 2-3 hours of "burn in" at those settings, i get 750. My 3D clocks are exactly the same..

Anyone else get this problem? After a restart, performance is back to normal.

What is this? sleepysmiley03.gif

Does VRAM usage in Afterburner go up substantially when comparing the first run to one done after 2-3 hours?
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